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  On structure-property relationship in nanostructured bainitic steel subjected to the quenching and partitioning process

Luo, P., Gao, G., Zhang, H., Tan, Z., Misra, R. D. K., & Bai, B. (2016). On structure-property relationship in nanostructured bainitic steel subjected to the quenching and partitioning process. Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing, 661, 1-8. doi:10.1016/j.msea.2016.03.006.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-B93E-A Version Permalink: http://hdl.handle.net/21.11116/0000-0001-B93F-9
Genre: Journal Article

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 Creators:
Luo, Ping1, Author              
Gao, Guhui2, Author              
Zhang, Han3, Author              
Tan, Zhunli2, Author              
Misra, Rajiv Devesh Kumar4, Author              
Bai, Bingzhe2, 5, Author              
Affiliations:
1Material Science & Engineering Research Center, School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China, persistent22              
2Materials Science and Engineering Research Center, Beijing Jiaotong University, Beijing, China, ou_persistent22              
3Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863381              
4Department of Metallurgical, Materials and Biomedical Engineering, University of Texas at El Paso, El Paso, TX, USA, persistent22              
5Key Laboratory of Advanced Materials, Department of Material Science and Engineering, Tsinghua University, Beijing, China, ou_persistent22              

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Free keywords: Austenite; Bainite; Manganese; Martensite; Martensitic steel; Mechanical properties; Quenching; Steel; Steel metallography; Tensile strength, Bainite transformations; Bainitic steel; Degradation of mechanical properties; Multiphase microstructure; Nanostructured bainites; Quenching and partitioning; Retained austenite; Structure property relationships, Bainitic transformations
 Abstract: We elucidate here the mechanistic contribution of the application of quenching and partitioning (QP) concept to a high carbon Mn-Si-Cr steel in obtaining a multiphase microstructure comprising of martensite/austenite and nanostructured bainite (bainitic ferrite and nanometer-sized film-like retained austenite) that exhibited tensile strength of 1923 MPa and total elongation of 18.3. The excellent mechanical properties are attributed to the enhanced refinement of blocky austenite islands obtained by the QP process. The austenite was stabilized by both carbon partitioning from martensite and bainite transformation. Compared with conventional heat treatment to produce nanostructured bainite, the total time is significantly reduced without degradation of mechanical properties. © 2016 Elsevier B.V.

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Language(s): eng - English
 Dates: 2016-04-20
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.msea.2016.03.006
BibTex Citekey: Luo20161
 Degree: -

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Title: Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing
  Abbreviation : Mater. Sci. Eng. A: Struct. Mater. Prop. Microstruct. Process.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: New York, NY : Elsevier
Pages: - Volume / Issue: 661 Sequence Number: - Start / End Page: 1 - 8 Identifier: ISSN: 0921-5093
CoNE: /journals/resource/954928498465_1